If you want to learn the fundamentals of ML I recommend a book, such as Deep Learning: Foundations and Concepts by Chris Bishop. If you insist on staying online, one option is https://course.fast.ai/
If you don't know ML I don't think you're going to learn much through ad hoc demos.
I didn't know Bishop had released a new textbook. I will have to take a look at it. I wasn't the biggest fan of his Pattern Recognition book as I found it overly dense. I much preferred the Murphy and Alpaydin books.
EDIT: His son is co-author?
Checked out the book on your recommendation, and they even have a free online option on their site! Very generous: https://www.bishopbook.com/
This book equipped me with the right intuition and tools to visualize machine learning. I wish I was smart enough to hold it all together.